X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=driver%2Fwindows.c;h=29edc82b66b1349fb3a3f6879a83fbd6f69ea4f6;hb=6afd6db0ae9396cd7ff897ade597cd5483f49b0e;hp=8598e7e0f1ab05cfe4aae2afe3b0cb59aa9d44ab;hpb=8eb2873d7054e705c4e83f22d18c40946a9e2529;p=xscreensaver diff --git a/driver/windows.c b/driver/windows.c index 8598e7e0..29edc82b 100644 --- a/driver/windows.c +++ b/driver/windows.c @@ -1,5 +1,5 @@ /* windows.c --- turning the screen black; dealing with visuals, virtual roots. - * xscreensaver, Copyright (c) 1991-2001 Jamie Zawinski + * xscreensaver, Copyright (c) 1991-2014 Jamie Zawinski * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that @@ -30,12 +30,21 @@ #endif /* HAVE_UNAME */ #include -#include /* for CARD32 */ +/* #include / * for CARD32 */ #include #include /* for XSetClassHint() */ #include #include /* for time() */ #include /* for the signal names */ +#include +#include + +/* You might think that to store an array of 32-bit quantities onto a + server-side property, you would pass an array of 32-bit data quantities + into XChangeProperty(). You would be wrong. You have to use an array + of longs, even if long is 64 bits (using 32 of each 64.) + */ +typedef long PROP32; #ifdef HAVE_MIT_SAVER_EXTENSION # include @@ -49,7 +58,6 @@ # include #endif /* HAVE_XINERAMA */ - /* This file doesn't need the Xt headers, so stub these types out... */ #undef XtPointer #define XtAppContext void* @@ -65,7 +73,7 @@ extern int kill (pid_t, int); /* signal() is in sys/signal.h... */ -Atom XA_VROOT, XA_XSETROOT_ID; +Atom XA_VROOT, XA_XSETROOT_ID, XA_ESETROOT_PMAP_ID, XA_XROOTPMAP_ID; Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_ID; Atom XA_SCREENSAVER_STATUS; @@ -117,7 +125,7 @@ grab_kbd(saver_info *si, Window w, int screen_no) } if (p->verbose_p) - fprintf(stderr, "%s: %d: grabbing keyboard on 0x%x... %s.\n", + fprintf(stderr, "%s: %d: grabbing keyboard on 0x%lx... %s.\n", blurb(), screen_no, (unsigned long) w, grab_string(status)); return status; } @@ -137,7 +145,7 @@ grab_mouse (saver_info *si, Window w, Cursor cursor, int screen_no) } if (p->verbose_p) - fprintf(stderr, "%s: %d: grabbing mouse on 0x%x... %s.\n", + fprintf(stderr, "%s: %d: grabbing mouse on 0x%lx... %s.\n", blurb(), screen_no, (unsigned long) w, grab_string(status)); return status; } @@ -149,7 +157,7 @@ ungrab_kbd(saver_info *si) saver_preferences *p = &si->prefs; XUngrabKeyboard(si->dpy, CurrentTime); if (p->verbose_p) - fprintf(stderr, "%s: %d: ungrabbing keyboard (was 0x%x).\n", + fprintf(stderr, "%s: %d: ungrabbing keyboard (was 0x%lx).\n", blurb(), si->keyboard_grab_screen, (unsigned long) si->keyboard_grab_window); si->keyboard_grab_window = 0; @@ -162,20 +170,80 @@ ungrab_mouse(saver_info *si) saver_preferences *p = &si->prefs; XUngrabPointer(si->dpy, CurrentTime); if (p->verbose_p) - fprintf(stderr, "%s: %d: ungrabbing mouse (was 0x%x).\n", + fprintf(stderr, "%s: %d: ungrabbing mouse (was 0x%lx).\n", blurb(), si->mouse_grab_screen, (unsigned long) si->mouse_grab_window); si->mouse_grab_window = 0; } +/* Apparently there is this program called "rdesktop" which is a windows + terminal server client for Unix. It would seem that this program holds + the keyboard GRABBED the whole time it has focus! This is, of course, + completely idiotic: the whole point of grabbing is to get events when + you do *not* have focus, so grabbing *only when* you have focus is + completely redundant -- unless your goal is to make xscreensaver not + able to ever lock the screen when your program is running. + + If xscreensaver blanks while rdesktop still has a keyboard grab, then + when we try to prompt for the password, we won't get the characters: + they'll be typed into rdesktop. + + Perhaps rdesktop will release its keyboard grab if it loses focus? + What the hell, let's give it a try. If we fail to grab the keyboard + four times in a row, we forcibly set focus to "None" and try four + more times. (We don't touch focus unless we're already having a hard + time getting a grab.) + */ +static void +nuke_focus (saver_info *si, int screen_no) +{ + saver_preferences *p = &si->prefs; + Window focus = 0; + int rev = 0; + + XGetInputFocus (si->dpy, &focus, &rev); + + if (p->verbose_p) + { + char w[255], r[255]; + + if (focus == PointerRoot) strcpy (w, "PointerRoot"); + else if (focus == None) strcpy (w, "None"); + else sprintf (w, "0x%lx", (unsigned long) focus); + + if (rev == RevertToParent) strcpy (r, "RevertToParent"); + else if (rev == RevertToPointerRoot) strcpy (r, "RevertToPointerRoot"); + else if (rev == RevertToNone) strcpy (r, "RevertToNone"); + else sprintf (r, "0x%x", rev); + + fprintf (stderr, "%s: %d: removing focus from %s / %s.\n", + blurb(), screen_no, w, r); + } + + XSetInputFocus (si->dpy, None, RevertToNone, CurrentTime); + XSync (si->dpy, False); +} + + +static void +ungrab_keyboard_and_mouse (saver_info *si) +{ + ungrab_mouse (si); + ungrab_kbd (si); +} + + static Bool grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor, int screen_no) { - Status mstatus, kstatus; + Status mstatus = 0, kstatus = 0; int i; int retries = 4; + Bool focus_fuckus = False; + + AGAIN: for (i = 0; i < retries; i++) { @@ -189,8 +257,17 @@ grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor, } if (kstatus != GrabSuccess) - fprintf (stderr, "%s: couldn't grab keyboard! (%s)\n", - blurb(), grab_string(kstatus)); + { + fprintf (stderr, "%s: couldn't grab keyboard! (%s)\n", + blurb(), grab_string(kstatus)); + + if (! focus_fuckus) + { + focus_fuckus = True; + nuke_focus (si, screen_no); + goto AGAIN; + } + } for (i = 0; i < retries; i++) { @@ -207,15 +284,39 @@ grab_keyboard_and_mouse (saver_info *si, Window window, Cursor cursor, fprintf (stderr, "%s: couldn't grab pointer! (%s)\n", blurb(), grab_string(mstatus)); - return (kstatus == GrabSuccess || - mstatus == GrabSuccess); -} -static void -ungrab_keyboard_and_mouse (saver_info *si) -{ - ungrab_mouse (si); - ungrab_kbd (si); + /* When should we allow blanking to proceed? The current theory + is that a keyboard grab is mandatory; a mouse grab is optional. + + - If we don't have a keyboard grab, then we won't be able to + read a password to unlock, so the kbd grab is mandatory. + (We can't conditionalize this on locked_p, because someone + might run "xscreensaver-command -lock" at any time.) + + - If we don't have a mouse grab, then we might not see mouse + clicks as a signal to unblank -- but we will still see kbd + activity, so that's not a disaster. + + It has been suggested that we should allow blanking if locking + is disabled, and we have a mouse grab but no keyboard grab + (that is: kstatus != GrabSuccess && + mstatus == GrabSuccess && + si->locking_disabled_p) + That would allow screen blanking (but not locking) while the gdm + login screen had the keyboard grabbed, but one would have to use + the mouse to unblank. Keyboard characters would go to the gdm + login field without unblanking. I have not made this change + because I'm not completely convinced it is a safe thing to do. + */ + + if (kstatus != GrabSuccess) /* Do not blank without a kbd grab. */ + { + /* If we didn't get both grabs, release the one we did get. */ + ungrab_keyboard_and_mouse (si); + return False; + } + + return True; /* Grab is good, go ahead and blank. */ } @@ -286,27 +387,43 @@ ensure_no_screensaver_running (Display *dpy, Screen *screen) Atom type; int format; unsigned long nitems, bytesafter; - char *version; + unsigned char *version; if (XGetWindowProperty (dpy, kids[i], XA_SCREENSAVER_VERSION, 0, 1, False, XA_STRING, &type, &format, &nitems, - &bytesafter, (unsigned char **) &version) + &bytesafter, &version) == Success && type != None) { - char *id; - if (!XGetWindowProperty (dpy, kids[i], XA_SCREENSAVER_ID, 0, 512, + unsigned char *id; + if (XGetWindowProperty (dpy, kids[i], XA_SCREENSAVER_ID, 0, 512, False, XA_STRING, &type, &format, &nitems, - &bytesafter, (unsigned char **) &id) - == Success + &bytesafter, &id) + != Success || type == None) - id = "???"; + id = (unsigned char *) "???"; fprintf (stderr, "%s: already running on display %s (window 0x%x)\n from process %s.\n", - blurb(), DisplayString (dpy), (int) kids [i], id); + blurb(), DisplayString (dpy), (int) kids [i], + (char *) id); status = True; } + + else if (XGetWindowProperty (dpy, kids[i], XA_WM_COMMAND, 0, 128, + False, XA_STRING, &type, &format, &nitems, + &bytesafter, &version) + == Success + && type != None + && !strcmp ((char *) version, "gnome-screensaver")) + { + fprintf (stderr, + "%s: \"%s\" is already running on display %s (window 0x%x)\n", + blurb(), (char *) version, + DisplayString (dpy), (int) kids [i]); + status = True; + break; + } } if (kids) XFree ((char *) kids); @@ -357,13 +474,17 @@ remove_vroot_property (Display *dpy, Window win) } +static Bool safe_XKillClient (Display *dpy, XID id); + static void -kill_xsetroot_data (Display *dpy, Window window, Bool verbose_p) +kill_xsetroot_data_1 (Display *dpy, Window window, + Atom prop, const char *atom_name, + Bool verbose_p) { Atom type; int format; unsigned long nitems, bytesafter; - Pixmap *dataP = 0; + unsigned char *dataP = 0; /* If the user has been using xv or xsetroot as a screensaver (to display an image on the screensaver window, as a kind of slideshow) then the @@ -376,31 +497,47 @@ kill_xsetroot_data (Display *dpy, Window window, Bool verbose_p) delete of the _XSETROOT_ID property, and if it held a pixmap, then we cause the RetainPermanent resources of the client which created it (and which no longer exists) to be freed. + + Update: it seems that Gnome and KDE do this same trick, but with the + properties "ESETROOT_PMAP_ID" and/or "_XROOTPMAP_ID" instead of + "_XSETROOT_ID". So, we'll kill those too. */ - if (XGetWindowProperty (dpy, window, XA_XSETROOT_ID, 0, 1, + if (XGetWindowProperty (dpy, window, prop, 0, 1, True, AnyPropertyType, &type, &format, &nitems, - &bytesafter, (unsigned char **) &dataP) + &bytesafter, &dataP) == Success && type != None) { - if (dataP && *dataP && type == XA_PIXMAP && format == 32 && + Pixmap *pixP = (Pixmap *) dataP; + if (pixP && *pixP && type == XA_PIXMAP && format == 32 && nitems == 1 && bytesafter == 0) { if (verbose_p) - fprintf (stderr, "%s: destroying xsetroot data (0x%lX).\n", - blurb(), *dataP); - XKillClient (dpy, *dataP); + fprintf (stderr, "%s: destroying %s data (0x%lX).\n", + blurb(), atom_name, *pixP); + safe_XKillClient (dpy, *pixP); } else - fprintf (stderr, "%s: deleted unrecognised _XSETROOT_ID property: \n\ - %lu, %lu; type: %lu, format: %d, nitems: %lu, bytesafter %ld\n", - blurb(), (unsigned long) dataP, (dataP ? *dataP : 0), type, + fprintf (stderr, + "%s: deleted unrecognised %s property: \n" + "\t%lu, %lu; type: %lu, format: %d, " + "nitems: %lu, bytesafter %ld\n", + blurb(), atom_name, + (unsigned long) pixP, (pixP ? *pixP : 0), type, format, nitems, bytesafter); } } -static void handle_signals (saver_info *si, Bool on_p); +static void +kill_xsetroot_data (Display *dpy, Window w, Bool verbose_p) +{ + kill_xsetroot_data_1 (dpy, w, XA_XSETROOT_ID, "_XSETROOT_ID", verbose_p); + kill_xsetroot_data_1 (dpy, w, XA_ESETROOT_PMAP_ID, "ESETROOT_PMAP_ID", + verbose_p); + kill_xsetroot_data_1 (dpy, w, XA_XROOTPMAP_ID, "_XROOTPMAP_ID", verbose_p); +} + static void save_real_vroot (saver_screen_info *ssi) @@ -436,15 +573,29 @@ save_real_vroot (saver_screen_info *ssi) Atom type; int format; unsigned long nitems, bytesafter; - Window *vrootP = 0; + unsigned char *dataP = 0; + Window *vrootP; + int j; + + /* Skip this window if it is the xscreensaver window of any other + screen (this can happen in the Xinerama case.) + */ + for (j = 0; j < si->nscreens; j++) + { + saver_screen_info *ssi2 = &si->screens[j]; + if (kids[i] == ssi2->screensaver_window) + goto SKIP; + } if (XGetWindowProperty (dpy, kids[i], XA_VROOT, 0, 1, False, XA_WINDOW, &type, &format, &nitems, &bytesafter, - (unsigned char **) &vrootP) + &dataP) != Success) continue; - if (! vrootP) + if (! dataP) continue; + + vrootP = (Window *) dataP; if (ssi->real_vroot) { if (*vrootP == ssi->screensaver_window) abort (); @@ -455,6 +606,8 @@ save_real_vroot (saver_screen_info *ssi) } ssi->real_vroot = kids [i]; ssi->real_vroot_value = *vrootP; + SKIP: + ; } XSync (dpy, False); @@ -463,7 +616,6 @@ save_real_vroot (saver_screen_info *ssi) if (ssi->real_vroot) { - handle_signals (si, True); remove_vroot_property (si->dpy, ssi->real_vroot); XSync (dpy, False); } @@ -473,7 +625,7 @@ save_real_vroot (saver_screen_info *ssi) static Bool -restore_real_vroot_2 (saver_screen_info *ssi) +restore_real_vroot_1 (saver_screen_info *ssi) { saver_info *si = ssi->global; saver_preferences *p = &si->prefs; @@ -481,7 +633,8 @@ restore_real_vroot_2 (saver_screen_info *ssi) fprintf (stderr, "%s: restoring __SWM_VROOT property on the real vroot (0x%lx).\n", blurb(), (unsigned long) ssi->real_vroot); - remove_vroot_property (si->dpy, ssi->screensaver_window); + if (ssi->screensaver_window) + remove_vroot_property (si->dpy, ssi->screensaver_window); if (ssi->real_vroot) { store_vroot_property (si->dpy, ssi->real_vroot, ssi->real_vroot_value); @@ -496,27 +649,20 @@ restore_real_vroot_2 (saver_screen_info *ssi) return False; } -static Bool -restore_real_vroot_1 (saver_info *si) +Bool +restore_real_vroot (saver_info *si) { int i; Bool did_any = False; for (i = 0; i < si->nscreens; i++) { saver_screen_info *ssi = &si->screens[i]; - if (restore_real_vroot_2 (ssi)) + if (restore_real_vroot_1 (ssi)) did_any = True; } return did_any; } -void -restore_real_vroot (saver_info *si) -{ - if (restore_real_vroot_1 (si)) - handle_signals (si, False); -} - /* Signal hackery to ensure that the vroot doesn't get left in an inconsistent state @@ -603,67 +749,109 @@ restore_real_vroot_handler (int sig) saver_info *si = global_si_kludge; /* I hate C so much... */ signal (sig, SIG_DFL); - if (restore_real_vroot_1 (si)) + if (restore_real_vroot (si)) fprintf (real_stderr, "\n%s: %s intercepted, vroot restored.\n", blurb(), signal_name(sig)); kill (getpid (), sig); } static void -catch_signal (saver_info *si, int sig, Bool on_p) +catch_signal (saver_info *si, int sig, RETSIGTYPE (*handler) (int)) { - if (! on_p) - signal (sig, SIG_DFL); - else +# ifdef HAVE_SIGACTION + + struct sigaction a; + a.sa_handler = handler; + sigemptyset (&a.sa_mask); + a.sa_flags = 0; + + /* On Linux 2.4.9 (at least) we need to tell the kernel to not mask delivery + of this signal from inside its handler, or else when we execvp() the + process again, it starts up with SIGHUP blocked, meaning that killing + it with -HUP only works *once*. You'd think that execvp() would reset + all the signal masks, but it doesn't. + */ +# if defined(SA_NOMASK) + a.sa_flags |= SA_NOMASK; +# elif defined(SA_NODEFER) + a.sa_flags |= SA_NODEFER; +# endif + + if (sigaction (sig, &a, 0) < 0) +# else /* !HAVE_SIGACTION */ + if (((long) signal (sig, handler)) == -1L) +# endif /* !HAVE_SIGACTION */ { - if (((long) signal (sig, restore_real_vroot_handler)) == -1L) - { - char buf [255]; - sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig)); - perror (buf); - saver_exit (si, 1, 0); - } + char buf [255]; + sprintf (buf, "%s: couldn't catch %s", blurb(), signal_name(sig)); + perror (buf); + saver_exit (si, 1, 0); } } -static void -handle_signals (saver_info *si, Bool on_p) +static RETSIGTYPE saver_sighup_handler (int sig); + +void +handle_signals (saver_info *si) { -#if 0 - if (on_p) fprintf (stderr, "handling signals\n"); - else fprintf (stderr, "unhandling signals\n"); -#endif + catch_signal (si, SIGHUP, saver_sighup_handler); - catch_signal (si, SIGHUP, on_p); - catch_signal (si, SIGINT, on_p); - catch_signal (si, SIGQUIT, on_p); - catch_signal (si, SIGILL, on_p); - catch_signal (si, SIGTRAP, on_p); + catch_signal (si, SIGINT, restore_real_vroot_handler); + catch_signal (si, SIGQUIT, restore_real_vroot_handler); + catch_signal (si, SIGILL, restore_real_vroot_handler); + catch_signal (si, SIGTRAP, restore_real_vroot_handler); #ifdef SIGIOT - catch_signal (si, SIGIOT, on_p); + catch_signal (si, SIGIOT, restore_real_vroot_handler); #endif - catch_signal (si, SIGABRT, on_p); + catch_signal (si, SIGABRT, restore_real_vroot_handler); #ifdef SIGEMT - catch_signal (si, SIGEMT, on_p); + catch_signal (si, SIGEMT, restore_real_vroot_handler); #endif - catch_signal (si, SIGFPE, on_p); - catch_signal (si, SIGBUS, on_p); - catch_signal (si, SIGSEGV, on_p); + catch_signal (si, SIGFPE, restore_real_vroot_handler); + catch_signal (si, SIGBUS, restore_real_vroot_handler); + catch_signal (si, SIGSEGV, restore_real_vroot_handler); #ifdef SIGSYS - catch_signal (si, SIGSYS, on_p); + catch_signal (si, SIGSYS, restore_real_vroot_handler); #endif - catch_signal (si, SIGTERM, on_p); + catch_signal (si, SIGTERM, restore_real_vroot_handler); #ifdef SIGXCPU - catch_signal (si, SIGXCPU, on_p); + catch_signal (si, SIGXCPU, restore_real_vroot_handler); #endif #ifdef SIGXFSZ - catch_signal (si, SIGXFSZ, on_p); + catch_signal (si, SIGXFSZ, restore_real_vroot_handler); #endif #ifdef SIGDANGER - catch_signal (si, SIGDANGER, on_p); + catch_signal (si, SIGDANGER, restore_real_vroot_handler); #endif } + +static RETSIGTYPE +saver_sighup_handler (int sig) +{ + saver_info *si = global_si_kludge; /* I hate C so much... */ + + /* Re-establish SIGHUP handler */ + catch_signal (si, SIGHUP, saver_sighup_handler); + + fprintf (stderr, "%s: %s received: restarting...\n", + blurb(), signal_name(sig)); + + if (si->screen_blanked_p) + { + int i; + for (i = 0; i < si->nscreens; i++) + kill_screenhack (&si->screens[i]); + unblank_screen (si); + XSync (si->dpy, False); + } + + restart_process (si); /* Does not return */ + abort (); +} + + + void saver_exit (saver_info *si, int status, const char *dump_core_reason) { @@ -677,7 +865,7 @@ saver_exit (saver_info *si, int status, const char *dump_core_reason) exiting = True; - vrs = restore_real_vroot_1 (si); + vrs = restore_real_vroot (si); emergency_kill_subproc (si); shutdown_stderr (si); @@ -710,7 +898,7 @@ saver_exit (saver_info *si, int status, const char *dump_core_reason) if (bugp) fprintf(real_stderr, "%s: see http://www.jwz.org/xscreensaver/bugs.html\n" - "\t\tfor bug reporting information.\n\n", + "\t\t\tfor bug reporting information.\n\n", blurb()); # if defined(HAVE_GETCWD) @@ -814,16 +1002,16 @@ store_saver_id (saver_screen_info *ssi) void store_saver_status (saver_info *si) { - CARD32 *status; + PROP32 *status; int size = si->nscreens + 2; int i; - status = (CARD32 *) calloc (size, sizeof(CARD32)); + status = (PROP32 *) calloc (size, sizeof(PROP32)); - status[0] = (CARD32) (si->screen_blanked_p + status[0] = (PROP32) (si->screen_blanked_p ? (si->locked_p ? XA_LOCK : XA_BLANK) : 0); - status[1] = (CARD32) si->blank_time; + status[1] = (PROP32) si->blank_time; for (i = 0; i < si->nscreens; i++) { @@ -836,190 +1024,7 @@ store_saver_status (saver_info *si) XA_SCREENSAVER_STATUS, XA_INTEGER, 32, PropModeReplace, (unsigned char *) status, size); -} - - - -/* Returns the area of the screen which the xscreensaver window should cover. - Normally this is the whole screen, but if the X server's root window is - actually larger than the monitor's displayable area, then we want to - operate in the currently-visible portion of the desktop instead. - */ -void -get_screen_viewport (saver_screen_info *ssi, - int *x_ret, int *y_ret, - int *w_ret, int *h_ret, - int target_x, int target_y, - Bool verbose_p) -{ - int w = WidthOfScreen (ssi->screen); - int h = HeightOfScreen (ssi->screen); - -#ifdef HAVE_XF86VMODE - saver_info *si = ssi->global; - int event, error; - int dot; - XF86VidModeModeLine ml; - int x, y; - Bool xinerama_p; - Bool placement_only_p = (target_x != -1 && target_y != -1); - -#ifdef HAVE_XINERAMA - xinerama_p = (XineramaQueryExtension (si->dpy, &event, &error) && - XineramaIsActive (si->dpy)); -#else /* !HAVE_XINERAMA */ - /* Even if we don't have the client-side Xinerama lib, check to see if - the server supports Xinerama, so that we know to ignore the VidMode - extension -- otherwise a server crash could result. Yay. */ - xinerama_p = XQueryExtension (si->dpy, "XINERAMA", &error, &event, &error); - -#endif /* !HAVE_XINERAMA */ - -#ifdef HAVE_XINERAMA - if (xinerama_p && placement_only_p) - { - int nscreens = 0; - XineramaScreenInfo *xsi = XineramaQueryScreens (si->dpy, &nscreens); - if (xsi) - { - /* Find the screen that contains the mouse. */ - int which = -1; - int i; - for (i = 0; i < nscreens; i++) - { - if (target_x >= xsi[i].x_org && - target_y >= xsi[i].y_org && - target_x < xsi[i].x_org + xsi[i].width && - target_y < xsi[i].y_org + xsi[i].height) - which = i; - if (verbose_p) - { - fprintf (stderr, "%s: %d: xinerama vp: %dx%d+%d+%d", - blurb(), i, - xsi[which].width, xsi[which].height, - xsi[i].x_org, xsi[i].y_org); - if (which == i) - fprintf (stderr, "; mouse at %d,%d", - target_x, target_y); - fprintf (stderr, ".\n"); - } - } - if (which == -1) which = 0; /* didn't find it? Use the first. */ - *x_ret = xsi[which].x_org; - *y_ret = xsi[which].y_org; - *w_ret = xsi[which].width; - *h_ret = xsi[which].height; - XFree (xsi); - return; - } - } -#endif /* HAVE_XINERAMA */ - - if (!xinerama_p && /* Xinerama + VidMode = broken. */ - XF86VidModeQueryExtension (si->dpy, &event, &error) && - XF86VidModeGetModeLine (si->dpy, ssi->number, &dot, &ml) && - XF86VidModeGetViewPort (si->dpy, ssi->number, &x, &y)) - { - char msg[512]; - *x_ret = x; - *y_ret = y; - *w_ret = ml.hdisplay; - *h_ret = ml.vdisplay; - - if (*x_ret == 0 && *y_ret == 0 && *w_ret == w && *h_ret == h) - /* There is no viewport -- the screen does not scroll. */ - return; - - - /* Apparently some versions of XFree86 return nonsense here! - I've had reports of 1024x768 viewports at -1936862040, -1953705044. - So, sanity-check the values and give up if they are out of range. - */ - if (*x_ret < 0 || *x_ret >= w || - *y_ret < 0 || *y_ret >= h || - *w_ret <= 0 || *w_ret > w || - *h_ret <= 0 || *h_ret > h) - { - static int warned_once = 0; - if (!warned_once) - { - fprintf (stderr, "\n" - "%s: X SERVER BUG: %dx%d viewport at %d,%d is impossible.\n" - "%s: The XVidMode server extension is returning nonsense.\n" - "%s: Please report this bug to your X server vendor.\n\n", - blurb(), *w_ret, *h_ret, *x_ret, *y_ret, - blurb(), blurb()); - warned_once = 1; - } - *x_ret = 0; - *y_ret = 0; - *w_ret = w; - *h_ret = h; - return; - } - - sprintf (msg, "%s: %d: vp is %dx%d+%d+%d", - blurb(), ssi->number, - *w_ret, *h_ret, *x_ret, *y_ret); - - - /* Apparently, though the server stores the X position in increments of - 1 pixel, it will only make changes to the *display* in some other - increment. With XF86_SVGA on a Thinkpad, the display only updates - in multiples of 8 pixels when in 8-bit mode, and in multiples of 4 - pixels in 16-bit mode. I don't know what it does in 24- and 32-bit - mode, because I don't have enough video memory to find out. - - I consider it a bug that XF86VidModeGetViewPort() is telling me the - server's *target* scroll position rather than the server's *actual* - scroll position. David Dawes agrees, and says they may fix this in - XFree86 4.0, but it's notrivial. - - He also confirms that this behavior is server-dependent, so the - actual scroll position cannot be reliably determined by the client. - So... that means the only solution is to provide a ``sandbox'' - around the blackout window -- we make the window be up to N pixels - larger than the viewport on both the left and right sides. That - means some part of the outer edges of each hack might not be - visible, but screw it. - - I'm going to guess that 16 pixels is enough, and that the Y dimension - doesn't have this problem. - - The drawback of doing this, of course, is that some of the screenhacks - will still look pretty stupid -- for example, "slidescreen" will cut - off the left and right edges of the grid, etc. - */ -# define FUDGE 16 - if (x > 0 && x < w - ml.hdisplay) /* not at left edge or right edge */ - { - /* Round X position down to next lower multiple of FUDGE. - Increase width by 2*FUDGE in case some server rounds up. - */ - *x_ret = ((x - 1) / FUDGE) * FUDGE; - *w_ret += (FUDGE * 2); - } -# undef FUDGE - - if (*x_ret != x || - *y_ret != y || - *w_ret != ml.hdisplay || - *h_ret != ml.vdisplay) - sprintf (msg + strlen(msg), "; fudged to %dx%d+%d+%d", - *w_ret, *h_ret, *x_ret, *y_ret); - - if (verbose_p) - fprintf (stderr, "%s.\n", msg); - - return; - } - -#endif /* HAVE_XF86VMODE */ - - *x_ret = 0; - *y_ret = 0; - *w_ret = w; - *h_ret = h; + free (status); } @@ -1097,6 +1102,54 @@ safe_XDestroyWindow (Display *dpy, Window window) } +static Bool +safe_XKillClient (Display *dpy, XID id) +{ + XErrorHandler old_handler; + XSync (dpy, False); + error_handler_hit_p = False; + old_handler = XSetErrorHandler (ignore_all_errors_ehandler); + + XKillClient (dpy, id); + + XSync (dpy, False); + XSetErrorHandler (old_handler); + XSync (dpy, False); + + return (!error_handler_hit_p); +} + + +#ifdef HAVE_XF86VMODE +Bool +safe_XF86VidModeGetViewPort (Display *dpy, int screen, int *xP, int *yP) +{ + Bool result; + XErrorHandler old_handler; + XSync (dpy, False); + error_handler_hit_p = False; + old_handler = XSetErrorHandler (ignore_all_errors_ehandler); + + result = XF86VidModeGetViewPort (dpy, screen, xP, yP); + + XSync (dpy, False); + XSetErrorHandler (old_handler); + XSync (dpy, False); + + return (error_handler_hit_p + ? False + : result); +} + +/* There is no "safe_XF86VidModeGetModeLine" because it fails with an + untrappable I/O error instead of an X error -- so one must call + safe_XF86VidModeGetViewPort first, and assume that both have the + same error condition. Thank you XFree, may I have another. + */ + +#endif /* HAVE_XF86VMODE */ + + static void initialize_screensaver_window_1 (saver_screen_info *ssi) { @@ -1112,13 +1165,9 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) XColor black; XSetWindowAttributes attrs; unsigned long attrmask; - int x, y, width, height; static Bool printed_visual_info = False; /* only print the message once. */ Window horked_window = 0; - get_screen_viewport (ssi, &x, &y, &width, &height, -1, -1, - (p->verbose_p && !si->screen_blanked_p)); - black.red = black.green = black.blue = 0; if (ssi->cmap == DefaultColormapOfScreen (ssi->screen)) @@ -1171,8 +1220,6 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) attrs.backing_pixel = ssi->black_pixel; attrs.border_pixel = ssi->black_pixel; - if (p->debug_p) width = width / 2; - if (!p->verbose_p || printed_visual_info) ; else if (ssi->current_visual == DefaultVisualOfScreen (ssi->screen)) @@ -1248,10 +1295,10 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) { XWindowChanges changes; unsigned int changesmask = CWX|CWY|CWWidth|CWHeight|CWBorderWidth; - changes.x = x; - changes.y = y; - changes.width = width; - changes.height = height; + changes.x = ssi->x; + changes.y = ssi->y; + changes.width = ssi->width; + changes.height = ssi->height; changes.border_width = 0; if (! (safe_XConfigureWindow (si->dpy, ssi->screensaver_window, @@ -1268,10 +1315,9 @@ initialize_screensaver_window_1 (saver_screen_info *ssi) { ssi->screensaver_window = XCreateWindow (si->dpy, RootWindowOfScreen (ssi->screen), - x, y, width, height, + ssi->x, ssi->y, ssi->width, ssi->height, 0, ssi->current_depth, InputOutput, ssi->current_visual, attrmask, &attrs); - reset_stderr (ssi); if (horked_window) @@ -1323,6 +1369,113 @@ initialize_screensaver_window (saver_info *si) } +/* Called when the RANDR (Resize and Rotate) extension tells us that + the size of the screen has changed while the screen was blanked. + Call update_screen_layout() first, then call this to synchronize + the size of the saver windows to the new sizes of the screens. + */ +void +resize_screensaver_window (saver_info *si) +{ + saver_preferences *p = &si->prefs; + int i; + + for (i = 0; i < si->nscreens; i++) + { + saver_screen_info *ssi = &si->screens[i]; + XWindowAttributes xgwa; + + /* Make sure a window exists -- it might not if a monitor was just + added for the first time. + */ + if (! ssi->screensaver_window) + { + initialize_screensaver_window_1 (ssi); + if (p->verbose_p) + fprintf (stderr, + "%s: %d: newly added window 0x%lx %dx%d+%d+%d\n", + blurb(), i, (unsigned long) ssi->screensaver_window, + ssi->width, ssi->height, ssi->x, ssi->y); + } + + /* Make sure the window is the right size -- it might not be if + the monitor changed resolution, or if a badly-behaved hack + screwed with it. + */ + XGetWindowAttributes (si->dpy, ssi->screensaver_window, &xgwa); + if (xgwa.x != ssi->x || + xgwa.y != ssi->y || + xgwa.width != ssi->width || + xgwa.height != ssi->height) + { + XWindowChanges changes; + unsigned int changesmask = CWX|CWY|CWWidth|CWHeight|CWBorderWidth; + changes.x = ssi->x; + changes.y = ssi->y; + changes.width = ssi->width; + changes.height = ssi->height; + changes.border_width = 0; + + if (p->verbose_p) + fprintf (stderr, + "%s: %d: resize 0x%lx from %dx%d+%d+%d to %dx%d+%d+%d\n", + blurb(), i, (unsigned long) ssi->screensaver_window, + xgwa.width, xgwa.height, xgwa.x, xgwa.y, + ssi->width, ssi->height, ssi->x, ssi->y); + + if (! safe_XConfigureWindow (si->dpy, ssi->screensaver_window, + changesmask, &changes)) + fprintf (stderr, "%s: %d: someone horked our saver window" + " (0x%lx)! Unable to resize it!\n", + blurb(), i, (unsigned long) ssi->screensaver_window); + } + + /* Now (if blanked) make sure that it's mapped and running a hack -- + it might not be if we just added it. (We also might be re-using + an old window that existed for a previous monitor that was + removed and re-added.) + + Note that spawn_screenhack() calls select_visual() which may destroy + and re-create the window via initialize_screensaver_window_1(). + */ + if (si->screen_blanked_p) + { + if (ssi->cmap) + XInstallColormap (si->dpy, ssi->cmap); + XMapRaised (si->dpy, ssi->screensaver_window); + if (! ssi->pid) + spawn_screenhack (ssi); + + /* Make sure the act of adding a screen doesn't present as + pointer motion (and thus cause an unblank). */ + { + Window root, child; + int x, y; + unsigned int mask; + XQueryPointer (si->dpy, ssi->screensaver_window, &root, &child, + &ssi->last_poll_mouse.root_x, + &ssi->last_poll_mouse.root_y, + &x, &y, &mask); + } + } + } + + /* Kill off any savers running on no-longer-extant monitors. + */ + for (; i < si->ssi_count; i++) + { + saver_screen_info *ssi = &si->screens[i]; + if (ssi->pid) + kill_screenhack (ssi); + if (ssi->screensaver_window) + { + XUnmapWindow (si->dpy, ssi->screensaver_window); + restore_real_vroot_1 (ssi); + } + } +} + + void raise_window (saver_info *si, Bool inhibit_fade, Bool between_hacks_p, Bool dont_clear) @@ -1379,7 +1532,8 @@ raise_window (saver_info *si, /* Note! The server is grabbed, and this will take several seconds to complete! */ - fade_screens (si->dpy, current_maps, current_windows, + fade_screens (si->dpy, current_maps, + current_windows, si->nscreens, p->fade_seconds/1000, p->fade_ticks, True, !dont_clear); free(current_maps); @@ -1433,33 +1587,34 @@ int mouse_screen (saver_info *si) { saver_preferences *p = &si->prefs; + Window pointer_root, pointer_child; + int root_x, root_y, win_x, win_y; + unsigned int mask; + int i; if (si->nscreens == 1) return 0; - else + + for (i = 0; i < si->nscreens; i++) { - int i; - for (i = 0; i < si->nscreens; i++) + saver_screen_info *ssi = &si->screens[i]; + if (XQueryPointer (si->dpy, RootWindowOfScreen (ssi->screen), + &pointer_root, &pointer_child, + &root_x, &root_y, &win_x, &win_y, &mask) && + root_x >= ssi->x && + root_y >= ssi->y && + root_x < ssi->x + ssi->width && + root_y < ssi->y + ssi->height) { - saver_screen_info *ssi = &si->screens[i]; - Window pointer_root, pointer_child; - int root_x, root_y, win_x, win_y; - unsigned int mask; - if (XQueryPointer (si->dpy, - RootWindowOfScreen (ssi->screen), - &pointer_root, &pointer_child, - &root_x, &root_y, &win_x, &win_y, &mask)) - { - if (p->verbose_p) - fprintf (stderr, "%s: mouse is on screen %d\n", - blurb(), i, si->nscreens); - return i; - } + if (p->verbose_p) + fprintf (stderr, "%s: mouse is on screen %d of %d\n", + blurb(), i, si->nscreens); + return i; } - - /* couldn't figure out where the mouse is? Oh well. */ - return 0; } + + /* couldn't figure out where the mouse is? Oh well. */ + return 0; } @@ -1487,12 +1642,17 @@ blank_screen (saver_info *si) mscreen); +# if 0 if (si->using_mit_saver_extension || si->using_sgi_saver_extension) /* If we're using a server extension, then failure to get a grab is not a big deal -- even without the grab, we will still be able to un-blank when there is user activity, since the server will tell us. */ + /* #### No, that's not true: if we don't have a keyboard grab, + then we can't read passwords to unlock. + */ ok = True; +# endif /* 0 */ if (!ok) return False; @@ -1500,8 +1660,8 @@ blank_screen (saver_info *si) for (i = 0; i < si->nscreens; i++) { saver_screen_info *ssi = &si->screens[i]; - - save_real_vroot (ssi); + if (ssi->real_screen_p) + save_real_vroot (ssi); store_vroot_property (si->dpy, ssi->screensaver_window, ssi->screensaver_window); @@ -1510,9 +1670,9 @@ blank_screen (saver_info *si) { int ev, er; if (!XF86VidModeQueryExtension (si->dpy, &ev, &er) || - !XF86VidModeGetViewPort (si->dpy, i, - &ssi->blank_vp_x, - &ssi->blank_vp_y)) + !safe_XF86VidModeGetViewPort (si->dpy, i, + &ssi->blank_vp_x, + &ssi->blank_vp_y)) ssi->blank_vp_x = ssi->blank_vp_y = -1; } #endif /* HAVE_XF86VMODE */ @@ -1537,7 +1697,7 @@ unblank_screen (saver_info *si) Bool unfade_p = (si->fading_possible_p && p->unfade_p); int i; - monitor_power_on (si); + monitor_power_on (si, True); reset_watchdog_timer (si, False); if (si->demoing_p) @@ -1576,8 +1736,8 @@ unblank_screen (saver_info *si) XUngrabServer (si->dpy); XSync (si->dpy, False); /* ###### (danger over) */ - - fade_screens (si->dpy, 0, current_windows, + fade_screens (si->dpy, 0, + current_windows, si->nscreens, p->fade_seconds/1000, p->fade_ticks, False, False); @@ -1605,7 +1765,7 @@ unblank_screen (saver_info *si) /* If the focus window does has a non-default colormap, then install that colormap as well. (On SGIs, this will cause both the root map - and the focus map to be installed simultaniously. It'd be nice to + and the focus map to be installed simultaneously. It'd be nice to pick up the other colormaps that had been installed, too; perhaps XListInstalledColormaps could be used for that?) */ @@ -1690,10 +1850,30 @@ maybe_transfer_grabs (saver_screen_info *ssi, } +static Visual * +get_screen_gl_visual (saver_info *si, int real_screen_number) +{ + int i; + int nscreens = ScreenCount (si->dpy); + + if (! si->best_gl_visuals) + si->best_gl_visuals = (Visual **) + calloc (nscreens + 1, sizeof (*si->best_gl_visuals)); + + for (i = 0; i < nscreens; i++) + if (! si->best_gl_visuals[i]) + si->best_gl_visuals[i] = + get_best_gl_visual (si, ScreenOfDisplay (si->dpy, i)); + + if (real_screen_number < 0 || real_screen_number >= nscreens) abort(); + return si->best_gl_visuals[real_screen_number]; +} + Bool select_visual (saver_screen_info *ssi, const char *visual_name) { + XWindowAttributes xgwa; saver_info *si = ssi->global; saver_preferences *p = &si->prefs; Bool install_cmap_p = p->install_cmap_p; @@ -1701,6 +1881,24 @@ select_visual (saver_screen_info *ssi, const char *visual_name) Visual *new_v = 0; Bool got_it; + /* On some systems (most recently, MacOS X) OpenGL programs get confused + when you kill one and re-start another on the same window. So maybe + it's best to just always destroy and recreate the xscreensaver window + when changing hacks, instead of trying to reuse the old one? + */ + Bool always_recreate_window_p = True; + + get_screen_gl_visual (si, 0); /* let's probe all the GL visuals early */ + + /* We make sure the existing window is actually on ssi->screen before + trying to use it, in case things moved around radically when monitors + were added or deleted. If we don't do this we could get a BadMatch + even though the depths match. I think. + */ + memset (&xgwa, 0, sizeof(xgwa)); + if (ssi->screensaver_window) + XGetWindowAttributes (si->dpy, ssi->screensaver_window, &xgwa); + if (visual_name && *visual_name) { if (!strcmp(visual_name, "default-i") || @@ -1722,7 +1920,7 @@ select_visual (saver_screen_info *ssi, const char *visual_name) !strcmp(visual_name, "Gl") || !strcmp(visual_name, "GL")) { - new_v = ssi->best_gl_visual; + new_v = get_screen_gl_visual (si, ssi->real_screen_number); if (!new_v && p->verbose_p) fprintf (stderr, "%s: no GL visuals.\n", progname); } @@ -1743,12 +1941,16 @@ select_visual (saver_screen_info *ssi, const char *visual_name) ssi->install_cmap_p = install_cmap_p; - if (new_v && - ((ssi->current_visual != new_v) || - (install_cmap_p != was_installed_p))) + if ((ssi->screen != xgwa.screen) || + (new_v && + (always_recreate_window_p || + (ssi->current_visual != new_v) || + (install_cmap_p != was_installed_p)))) { Colormap old_c = ssi->cmap; Window old_w = ssi->screensaver_window; + if (! new_v) + new_v = ssi->current_visual; if (p->verbose_p) {